O&K Will Build Hopper Dredge For Indonesia

O&K Orenstein & Koppel Aktiengesellschaft of Lubeck, West Germany, has received an order for the construction of a hopper suction dredge with a hopper capacity of 4,000 cubic meters. The order was placed by the Ministry of Transport, Communications, and Tourism, Directorate General of Seacommunications, Jakarta, Indonesia.

The dredge will be built under the survey and with the acceptance of Germanischer Lloyd. It will have an overall length of 110 meters, molded beam of 18 meters, and depth of 8 meters (360.9 by 59 by 26.2 feet). Full-load draft will be about 6.25 meters (20.5 feet) and maximum dredging depth will be 20 meters (65.6 feet). Total installed power will be 5,635 kw, and open-water speed a maximum of 12 knots.

Dredge pump operation and main propulsion will be by directdrive diesels. Twin-screw propulsion and an O&K transverse bow thruster will ensure good maneuverability.

The dredge pump driving machinery and the main propulsion plant will be separate installations fore and aft, respectively.

The dredging spoil will be taken in by two side suction pipes and distributed in the hopper by means of a loading box. Hydraulically operated slewing pipes will be provided forward, port and starboard, for thin spoil mixtures.

Above the hopper, a traveling gantry slewing crane with a lifting capacity of 8 tons will be installed to handle necessary work on deck and on the dredge pumps.

All dredging gear is controlled centrally from two dredgemaster's stations on the bridge. The new dredge will have air-conditioned quarters for a crew of 56.

Maritime Reporter Magazine, page 10,  Jul 15, 1980

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Maritime Reporter

First published in 1881 Maritime Reporter is the world's largest audited circulation publication serving the global maritime industry.